From 9ab2601dc4c145279dc518bca00349dc1abe77ed Mon Sep 17 00:00:00 2001 From: Zhenhua Huang Date: Thu, 2 Jan 2025 15:40:47 +0800 Subject: [PATCH] arm64: mm: Test for pmd_sect() in vmemmap_check_pmd() Commit 2045a3b8911b ("mm/sparse-vmemmap: generalise vmemmap_populate_hugepages()") introduces the vmemmap_check_pmd() while does not verify if the entry is a section mapping, as is already done for Loongarch & X86. The update includes a check for pmd_sect(). Only if pmd_sect() returns true, further vmemmap population for the addr is skipped. Signed-off-by: Zhenhua Huang Reviewed-by: Anshuman Khandual Link: https://lore.kernel.org/r/20250102074047.674156-1-quic_zhenhuah@quicinc.com Signed-off-by: Will Deacon --- arch/arm64/mm/mmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index e2739b69e11b..b4df5bc5b1b8 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -1169,7 +1169,8 @@ int __meminit vmemmap_check_pmd(pmd_t *pmdp, int node, unsigned long addr, unsigned long next) { vmemmap_verify((pte_t *)pmdp, node, addr, next); - return 1; + + return pmd_sect(READ_ONCE(*pmdp)); } int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, -- 2.50.1